According to the report, Nigeria scored 26 points, ranking 142nd out of 182 countries, where 100 represents a very clean public sector and 0 indicates extreme corruption. The country slipped marginally from 140th position in 2024 to 142nd in 2025, although it retained the same classification as the 36th most corrupt country globally, mirroring its position last year.
Nigeria shares this ranking with Cameroon, Guatemala, Guinea, Kyrgyzstan, and Papua New Guinea, all of which recorded identical scores.
The CPI, published on Tuesday via TI’s website, assesses perceived levels of public-sector corruption based on data from multiple independent institutions and expert assessments.
At the top of the table, Denmark retained its position as the least corrupt country in the world, scoring 89 points, followed by Finland (88), Singapore (84), and New Zealand and Norway (81). No African country featured in the global top 10.
Within Africa, Seychelles (68), Cabo Verde (62), and Botswana (58) emerged as the continent’s least corrupt countries. At the other end of the spectrum, South Sudan, Somalia, and Venezuela ranked as the most corrupt nations globally.
Explaining the methodology, Transparency International CEO, Maíra Martini, noted that while 31 countries have made significant progress since 2012, the majority have either stagnated or deteriorated.
“The global average score has dropped to a historic low of 42, with more than two-thirds of countries scoring below 50,” Martini said, warning that corruption continues to undermine public services, democratic institutions, and development outcomes.
She added that declining political leadership, weakened enforcement standards, and shrinking civic space are accelerating the problem worldwide—even in established democracies such as the United States, United Kingdom, and New Zealand.
Martini urged global leaders to recommit to accountability, protect civil society, and restore democratic checks and balances, noting that rising anti-government protests reflect growing public frustration with unaccountable governance.
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